US4541157A - Method of producing split bearing rings - Google Patents

Method of producing split bearing rings Download PDF

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Publication number
US4541157A
US4541157A US06/058,939 US5893979A US4541157A US 4541157 A US4541157 A US 4541157A US 5893979 A US5893979 A US 5893979A US 4541157 A US4541157 A US 4541157A
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United States
Prior art keywords
notch
ring
wedge
angle
split
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US06/058,939
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English (en)
Inventor
Noriyuki Tsushima
Toshiharu Hirose
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NTN Corp
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NTN Toyo Bearing Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/16—Making other particular articles rings, e.g. barrel hoops
    • B21D53/18—Making other particular articles rings, e.g. barrel hoops of hollow or C-shaped cross-section, e.g. for curtains, for eyelets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/04—Making machine elements ball-races or sliding bearing races
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
    • F16C2220/70—Shaping by removing material, e.g. machining by grinding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/10—Hardening, e.g. carburizing, carbo-nitriding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/20—Severing by manually forcing against fixed edge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/20—Severing by manually forcing against fixed edge
    • Y10T225/201—With other type severing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y10T29/49679—Anti-friction bearing or component thereof
    • Y10T29/49689—Race making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y10T29/4979—Breaking through weakened portion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y10T29/49792—Dividing through modified portion

Definitions

  • the present invention relates to a method of producing split bearing rings and, more particularly, it relates to a method of splitting bearing rings in a direction obliquely crossing their axes by exerting wedge stress in a notch of substantially V-shaped cross-section formed in a peripheral or end surface of a bearing ring.
  • splitting is effected by forming a notch in an end surface or inner peripheral surface of a bearing ring to be split, and then applying a ring press-breaking method using a press.
  • a ring press-breaking method using a press.
  • this conventional method since it is difficult to split a ring obliquely or in a V-form at a predetermined angle with respect to the axis of the ring (oblique splitting), in the case of a thin-walled article, it is usual practice to form a notch in the inner peripheral surface or an end surface and split the ring axially (parallel splitting) by pressing it in a direction crossing the notch at right angles.
  • splitting is effected usually by turning. With this method by turning, however, although oblique splitting is possible by separately producing two rings, each having an end surface inclined with respect to the axis by turning, the yield of material is low. Thus, the method is disadvantageous from the standpoint of productivity.
  • oblique splitting may be said to be the most desirable splitting method in light of the following conditions:
  • the split line resulting from oblique splitting crosses the major axis of the contact ellipse at an angle on the bearing rolling surface and the contact surface contacts only a portion of the split line with respect to line contact or similar rolling contact, so that stress concentration at the split region can be greatly reduced, resulting in remarkable improvement of the life of the bearing.
  • the present invention has been developed in view of the above problems encountered in producing split bearing rings and has for its object the provision of a method of producing split bearing rings which is capable of splitting rings in any desired direction and provides a high yield of material and high productivity.
  • the inner or outer peripheral surface of a bearing ring is formed with a notch which extends obliquely or in a V-form and, after the ring is heat-treated or further ground, wedge stress is exerted along the notch by wedge type press-breaking means, thereby splitting the ring in a direction obliquely crossing the axis thereof.
  • an end surface of a bearing ring is formed with a notch of substantially V-shaped cross-section at a predetermined angle with respect to the end surface and, after the ring is heat-treated or further ground, wedge stress is exerted in the notch by wedge type pressure-breaking means with an edge having a greater angle than the notch angle, thereby splitting the ring obliquely of the axis thereof.
  • Still another feature of the present invention is that the notch in the bearing ring is made in a surface thereof which does not act as a bearing surface.
  • FIGS. 1-11 show a first embodiment of the invention wherein a peripheral surface of a bearing ring is formed with a notch.
  • FIG. 1 is a perspective view of a bearing ring formed with an obliquely extending notch.
  • FIG. 2 shows how to split the bearing ring shown in FIG. 1.
  • FIG. 3 is a perspective view of a bearing ring formed with a notch extending in a V-form.
  • FIG. 4 is an enlarged plan view of the principal portion of the bearing ring shown in FIG. 3.
  • FIG. 5 is a schematic view showing how tensile stress acts in a flat plate according to a wedge type pressure-breaking method.
  • FIG. 6 is a graph showing variations of F(a/b)/ ⁇ a relative to a notch depth a.
  • FIG. 7 is a graph showing variations of K 1 relative to a notch angle ⁇ .
  • FIG. 8 is a schematic view showing the relation between a crack and a hole formed in a bearing ring.
  • FIG. 9 is a schematic view showing an instant when the crack reaches the hole.
  • FIG. 10 is a graph showing a region for a notch bottom curvature ⁇ where no quenching crack occurs with respect to a notch depth a.
  • FIG. 11 is a schematic view showing the relation of a wedge angle 2 ⁇ relative to a notch angle 2 ⁇ .
  • FIGS. 12-26 show a second embodiment of the invention wherein an end surface of a bearing ring is formed with a notch.
  • FIGS. 12 and 14 are perspective views of bearing rings to be split.
  • FIGS. 13 and 15 show how to split the bearing rings shown in FIGS. 12 and 14, respectively.
  • FIGS. 16 and 20 are perspective view of bearing rings to be split in a V-direction.
  • FIG. 17 is an enlarged front view of the principal portion of the bearing ring shown in FIG. 16.
  • FIGS. 18 and 19 are schematic views showing how to split the bearing ring shown in FIG. 16.
  • FIG. 21 is an enlarged front view of the principal portion of the bearing rings shown in FIG. 20.
  • FIG. 22 is a schematic view showing stress acting in a flat plate according to a wedge type pressure-breaking method.
  • FIG. 23 is a graph showing the relation between a notch depth a and breaking stress.
  • FIG. 24 is a graph showing the relation between a notch depth a and notch bottom curvature.
  • FIG. 25 is a schematic view showing the relation between a wedge shape and a wedge angle.
  • FIG. 26 is a side viewing showing bearing and bearing ring of the present invention.
  • a bearing ring to be split is designated at 1 and the outer peripheral surface thereof is formed with a notch 2 of substantially V-shaped cross-section.
  • the bearing ring 1 is split by wedge type pressure-breaking means 3 along the notch, i.e., in a direction obliquely crossing the axis.
  • the compressive load necessary for splitting an outer diameter 108.5 ⁇ inner diameter 85 ⁇ width 41 mm ring was about 6 tons.
  • a small hole 14 is centrally formed in the outer peripheral surface of a bearing ring 11 and notches 12a and 12b are formed in a V-form with said small hole 14 located at the crossing point of the V.
  • the material after being heat-treated and ground, is broken along one notch 12a and then along the other notch 12b by wedge type pressure-breaking means, whereby it is split along the split line obliquely crossing its axis.
  • the wedge angle should be greater than the notch angle. If the breaking stress at the bearing end is 180 kg/mm 2 , the stress intensity factor Kc of the front end of the crack at the time of crack occurrence is given as follows:
  • the product hardness H RC should suitably be not less than 50.
  • Practical ranges for (I) crack stopping hole diameter 2r, (II) notch bottom curvature ⁇ , (III) wedge angle 2 ⁇ , (IV) notch shape 2 ⁇ and (V) notch angle ⁇ are as follows:
  • the essential condition for the crack to stop at the hole is that the radius r of the hole is r>1.
  • r increases with ⁇ .
  • the hole diameter 2r be small from the standpoint of the rolling life, it is desirable that the notch bottom curvature ⁇ be small.
  • the notch bottom curvature ⁇ should be not more than 0.4.
  • the shape factor Kt is within the range Kt ⁇ 6 and no hardening crack will occur. This is taken as the notch bottom curvature ⁇ region for prevention of quenching crack relative to the notch depth a and is shown in FIG. 10. If the notch bottom curvature ⁇ is 0.4 mm, it follows that the notch depth a is allowed to have a value of up to 6 mm.
  • 2 ⁇ 2 ⁇ Since the bearing and wedge will be deformed when subjected to wedge stress, it is necessary that there be a substantial difference between the angles ⁇ and ⁇ .
  • the condition 2 ⁇ -2 ⁇ >20° is sufficient for ordinary bearing rings, though not necessarily definite since the size of wedge stress is influenced by the hardness of material. Therefore, 2 ⁇ -2 ⁇ is suitably 0°-20°.
  • the notch depth a varies with the wall thickness, etc., and the greater the notch depth, the more advantageous to splitting, but when splitting operation is considered, 3 ⁇ a ⁇ 10 is suitable.
  • the first feature of the present invention lies in forming a notch in the inner or outer diameter of a bearing ring obliquely or in a V-form, heat-treating and grinding the ring, and exerting wedge stress along the notch by wedge type pressure-breaking means having an edge of larger angle than the notch, thereby obliquely splitting the bearing ring. Therefore, bearing rings can be easily split in any desired direction and the yield and productivity are high. More particularly, since the breaking load required when a wedge is used is little influenced by the wall thickness, though influenced by the notch bottom curvature, this method is very effective even in the case of thick-walled articles.
  • a bearing ring 21 shown in FIG. 12 is formed with a notch 22 of substantially V-shaped cross-section for splitting purposes. As shown in FIG. 13, it is placed on a support 26 at a predetermined angle and wedge stress is exerted along the notch 22 by a wedge type pressure-breaking means 23, whereby the bearing ring is split in a direction obliquely crossing its axis.
  • the compressive load required for splitting an outer diameter 200 ⁇ inner diameter 160 ⁇ 100 mm width 100 mm ring was about 13 tons.
  • a bearing ring 31 shown in FIG. 14 has annular flanges 31a and 31b around its outer periphery.
  • One end surface of the bearing ring 31 is formed with a notch of substantially V-shaped cross-section for splitting purposes, while the other end surface is formed with a support surface 35 at right angles with the load line so that the ring 31 may be supported with the notch 32 vertically positioned. Therefore, the bearing ring 31, supported at its support surface 35 on the support 36 as shown in FIG. 15, will be split by the wedge type pressure-breaking means 35 in a direction obliquely crossing the axis.
  • a bearing ring 41 to be split is formed with a small hole 44 centrally of the width of its peripheral surface and the opposite end surfaces of the ring 41 are formed with notches 42a and 42b of V-shaped cross-section with their bottoms directed toward the small hole 44.
  • the small hole 44 is located at the intersection of the directions of propagation of the two notches.
  • the end surfaces are formed with support surfaces 45a and 45b so that the ring 41 may be supported against a load applied in the direction of the notch 45a or 45b.
  • the bearing 41 after being heat-treated and ground, is positioned at its one support surface 45a on the support 46 and subjected to wedge stress, causing the notch 42a to propagate to the small hole 44, whereupon the ring is turned upside down and positioned at its other support surface 45b on the support 46 and, similarly, the notch 42b is caused to propagate to the small hole 44.
  • the bearing ring 41 is split in a direction obliquely crossing its axis along the V-form split line.
  • splitting operation if a pin for prevention of deformation of the small hole during loading is inserted in the small hole 44, splitting can be facilitated.
  • FIGS. 20 and 21 show the arrangement of notches 52a and 52b and a small hole 54 formed in a bearing ring 51 which is to be split in a V-direction and which has annular flanges 51a and 51b, it being understood that if the small hole were located on the rolling surface, troubles would be caused.
  • the small hole 54 is located to avoid the rolling surface, and the notches 52a and 52b of V-shaped cross-section are formed in the end surfaces of the ring 51 in such a manner that the notch bottoms are directed toward the small hole 54.
  • the opposite end surfaces are further formed with support faces 55a and 55b vertically with respect to the load lines so that the ring 51 may be effectively supported against a load applied in a direction of the notch 52a or 52b.
  • the splitting operation for the bearing ring 51 is the same as for the previous ring 41.
  • F(a/b)/ ⁇ a varies with the notch depth a, as shown in FIG. 23. If ⁇ in the equation (3) is constant and ⁇ max as the breaking stress is uniquely determined by the material, then as F/ ⁇ a increases, P decreases. Therefore, the smaller the notch depth a, the greater the breaking load ⁇ max and the more advantageous.
  • the essential condition for the crack to stop at the small hole is that the radius r of the small hole is not less than 1 mm. In order for breakage to occur at once, ⁇ 0.6. It is seen that r increases with ⁇ . Since it is desirable that the hole diameter 2r may be small from the standpoint of the rolling life, it is desirable that the notch bottom curvature ⁇ be small. Therefore, suitably, the notch bottom curvature ⁇ should not be more than 0.6. If, however, the notch bottom curvature ⁇ is too small, there is a possibility that a hardening crack will occur during heat treatment. Therefore, it is necessary to set a lower limit to the notch bottom curvature ⁇ .
  • the notch shape factor Kt is within the range Kt ⁇ 6 and no quenching crack will occur.
  • This is taken as the notch bottom curvature ⁇ region for prevention of quenching crack relative to the notch depth a and is shown in a graph in FIG. 13. According to this graph, if the notch bottom curvature ⁇ is 0.4, it is seen that the notch depth a is allowed to have a value of up to 6 mm.
  • the relation between wedge angle 2 ⁇ and notch shape 2 ⁇ is always such that 2 ⁇ >2 ⁇ . Since the bearing and the wedge will deform when subjected to wedge stress, it is necessary that there be a substantial difference between the angles ⁇ and ⁇ .
  • the condition 2 ⁇ -2 ⁇ >20° is sufficient for ordinary bearing rings, though not necessarily definite since the size of the wedge stress is influenced by the hardness of the material.
  • the second feature of the present invention lies in forming a substantially V-shaped notch in an end surface of a bearing ring at a predetermined angle with respect to the surface, heat-treating and grinding the ring, and exerting wedge stress by wedge type pressure-breaking means having an edge of larger angle than the notch, thereby splitting the bearing ring in an oblique direction or V-direction.
  • bearing rings can be easily split in any desired direction without being influenced by the shapes of the inner and outer diameters. The yield and productivity are high. Further, loading a bearing ring at its end surface allows the use of a small size pressing device regardless of the size of the outer diameter of the bearing ring. The merits in practical use are very great.
  • notch 61 in bearing ring 62 is made in the surface of the ring, which is opposite to the surface 63 which acts as a race for roller bearing 64. Since the notch 61 is in the surface which is opposite to the race surface, the rolling element 64 does not contact the surface having the notch therein. This, in combination with the oblique direction of the notch, greatly reduces the stress concentration of the split region. Furthermore, vibration, pitting, etc. are reduced.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US06/058,939 1976-09-17 1979-07-19 Method of producing split bearing rings Expired - Lifetime US4541157A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11204776A JPS5337262A (en) 1976-09-17 1976-09-17 Manufacturing method of split bearing ring
JP51-112047 1976-09-17

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US05795279 Continuation-In-Part 1977-05-09

Publications (1)

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US4541157A true US4541157A (en) 1985-09-17

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US06/058,939 Expired - Lifetime US4541157A (en) 1976-09-17 1979-07-19 Method of producing split bearing rings

Country Status (6)

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US (1) US4541157A (enrdf_load_stackoverflow)
JP (1) JPS5337262A (enrdf_load_stackoverflow)
CA (1) CA1073645A (enrdf_load_stackoverflow)
DE (1) DE2723928C2 (enrdf_load_stackoverflow)
FR (1) FR2365056A1 (enrdf_load_stackoverflow)
GB (1) GB1564642A (enrdf_load_stackoverflow)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845817A (en) * 1988-06-29 1989-07-11 J. P. Industries, Inc. Method of forming a half-round bearing
US5201117A (en) * 1991-11-04 1993-04-13 General Motors Corporation Method and apparatus for sizing and cutting tubing
GB2308868A (en) * 1996-01-03 1997-07-09 Cooper Roller Bearings Company Split roller bearing ring
WO1997037788A1 (en) * 1996-04-09 1997-10-16 Chunghorng Richard Liu Method of manufacturing a component
US6217222B1 (en) 1998-11-18 2001-04-17 Skf Usa Inc. Notching construction and method
US20050189721A1 (en) * 2004-01-31 2005-09-01 Ab Skf Seal arrangement
US20060107718A1 (en) * 2003-07-30 2006-05-25 James Malcolm R Deformed forging
US20060138259A1 (en) * 2003-02-04 2006-06-29 Horst Wisniewski Method and device for cracking disk-like or plate-like production parts
US20070116393A1 (en) * 2005-11-22 2007-05-24 Shinji Oishi Needle roller bearing, crank shaft supporting structure, and split method of outer ring of needle roller bearing
EP1887264A1 (de) * 2006-08-07 2008-02-13 Schunk Kohlenstofftechnik GmbH Verfahren zum Herstellen eines tribologischen Bauteils
WO2010027684A1 (en) * 2008-09-04 2010-03-11 The Timken Company Method of manufacturing a split bearing ring
US20110064350A1 (en) * 2008-05-19 2011-03-17 Kazuyoshi Yamakawa Split outer ring, split rolling bearing using the same ring and construction and method of mounting the same rolling bearing
WO2012072408A1 (de) * 2010-12-02 2012-06-07 Schaeffler Technologies AG & Co. KG Bruchtrennverfahren
USD866408S1 (en) 2017-08-28 2019-11-12 Qa1 Precision Products, Inc. Shock absorber
USD869259S1 (en) 2017-08-28 2019-12-10 Qa1 Precision Products, Inc. Valve component
USD872837S1 (en) 2017-08-28 2020-01-14 Qa1 Precision Products, Inc. Bleed needle
US11085502B2 (en) 2017-08-28 2021-08-10 Qa1 Precision Products, Inc. Bleed needle for a hydraulic system
US11105390B2 (en) 2017-08-28 2021-08-31 Qa1 Precision Products, Inc. Shock absorber with dry valving
US11286986B2 (en) 2019-11-08 2022-03-29 Saint-Gobain Performance Plastics Corporation Split bearing, assembly, and method of making and using the same
CN115927807A (zh) * 2022-12-28 2023-04-07 重庆长江轴承股份有限公司 一种轴承热处理裂纹敏感性、淬硬性测试用试样及测试方法

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240682A (en) * 1979-03-15 1980-12-23 The Torrington Company Bearing race
DE2947091C2 (de) * 1979-11-22 1984-05-24 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Verfahren zur Herstellung von längs einer pfeilförmigen Trennfuge gesprengten Lagerringen für Wälzlager o.dgl.
DE3120655C2 (de) * 1981-05-23 1983-12-29 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Geschlitzter Kolbenring und Verfahren zu seiner Herstellung
DE3425829C2 (de) * 1983-07-21 1987-01-22 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Verfahren zum Herstellen eines mit einer Sprengfuge versehenen Bauteils, insbesondere Wälzlagerlaufringes
JPS6243476A (ja) * 1985-08-21 1987-02-25 Toagosei Chem Ind Co Ltd 瞬間接着剤用硬化促進剤組成物
JPH0730292B2 (ja) * 1986-06-24 1995-04-05 東亞合成株式会社 接着剤組成物
JPH0367308U (enrdf_load_stackoverflow) * 1989-11-03 1991-07-01
DE102010012476A1 (de) * 2010-03-24 2011-09-29 Schaeffler Technologies Gmbh & Co. Kg Trennbare Laufbahnhülsen
CN101947720B (zh) * 2010-09-25 2012-05-23 上海摩虹轴承有限公司 一种柱塞环的加工工艺
CN102528588A (zh) * 2010-12-24 2012-07-04 大连冶金轴承股份有限公司 一种剖分特大型双列圆柱滚子轴承加工方法
US8956055B2 (en) * 2011-02-25 2015-02-17 Nsk Ltd. Method for manufacturing split bearing ring

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US821322A (en) * 1905-08-30 1906-05-22 Thomas M Worrell Roller-bearing.
FR438685A (fr) * 1912-01-05 1912-05-24 Norma Cie Gmbh Procédé et dispositif pour l'assemblage des anneaux de roulement en deux parties utilisés dans les coussinets à billes ou à galets
US1298100A (en) * 1917-10-12 1919-03-25 Rowland H Royce Bushing.
US1507211A (en) * 1924-09-02 Roller bearing
US1967821A (en) * 1932-02-17 1934-07-24 Timken Roller Bearing Co Process of making raceway members
GB417774A (en) * 1934-04-30 1934-10-11 Timken Roller Bearing Co Improvements in the manufacture of raceway members for roller bearings
US2016924A (en) * 1934-06-28 1935-10-08 Karl L Herrmann Antifriction bearing
CH231312A (de) * 1941-12-10 1944-03-15 Automobilindustrie Ag F Lagerbuchse, die aus Blech zusammengerollt ist.
GB804392A (en) * 1956-05-23 1958-11-12 Louis Ricefield Improvements in a method of making self-aligning bearings

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB167708A (en) * 1920-11-01 1921-08-18 Harold Edwin Watton Improvements in or relating to the manufacture of ball or roller bearings
US1630759A (en) * 1926-04-23 1927-05-31 Jr Winslow S Pierce Breaking device for hollow cylinders
DE854607C (de) * 1940-05-11 1952-11-06 Charles Antony Ablett Waelzlager mit in zwei oder mehrere Teile geteiltem Innen- und/oder Aussenlaufring
US2648578A (en) * 1949-04-02 1953-08-11 Split Ballbearing Corp Bearing and method of making same
US2624645A (en) * 1951-05-03 1953-01-06 Torrington Co Fractured outer race for antifriction bearings
US2624105A (en) * 1951-05-15 1953-01-06 Torrington Co Method of preparing and assembling antifriction bearings
CH345206A (de) * 1956-05-29 1960-03-15 Ricefield Louis Selbsttätig sich einstellendes Lager
AT230686B (de) * 1960-07-22 1963-12-30 Heim Company Selbsteinstellendes geschmiertes Kugelgelenklager
US3140130A (en) * 1961-08-09 1964-07-07 Roller Bearing Co Of America Keyed segmented race rings and improved method of making same
US3592519A (en) * 1969-10-29 1971-07-13 Textron Inc Split antifriction-bearing construction
DE2446531A1 (de) * 1974-09-28 1976-04-15 Duerkoppwerke Nadellager mit geschlitztem aussenring

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1507211A (en) * 1924-09-02 Roller bearing
US821322A (en) * 1905-08-30 1906-05-22 Thomas M Worrell Roller-bearing.
FR438685A (fr) * 1912-01-05 1912-05-24 Norma Cie Gmbh Procédé et dispositif pour l'assemblage des anneaux de roulement en deux parties utilisés dans les coussinets à billes ou à galets
US1298100A (en) * 1917-10-12 1919-03-25 Rowland H Royce Bushing.
US1967821A (en) * 1932-02-17 1934-07-24 Timken Roller Bearing Co Process of making raceway members
GB417774A (en) * 1934-04-30 1934-10-11 Timken Roller Bearing Co Improvements in the manufacture of raceway members for roller bearings
US2016924A (en) * 1934-06-28 1935-10-08 Karl L Herrmann Antifriction bearing
CH231312A (de) * 1941-12-10 1944-03-15 Automobilindustrie Ag F Lagerbuchse, die aus Blech zusammengerollt ist.
GB804392A (en) * 1956-05-23 1958-11-12 Louis Ricefield Improvements in a method of making self-aligning bearings

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845817A (en) * 1988-06-29 1989-07-11 J. P. Industries, Inc. Method of forming a half-round bearing
US5201117A (en) * 1991-11-04 1993-04-13 General Motors Corporation Method and apparatus for sizing and cutting tubing
GB2308868A (en) * 1996-01-03 1997-07-09 Cooper Roller Bearings Company Split roller bearing ring
GB2308868B (en) * 1996-01-03 1999-09-22 Cooper Roller Bearings Company Improvements in split roller bearings and methods of making components therefor
WO1997037788A1 (en) * 1996-04-09 1997-10-16 Chunghorng Richard Liu Method of manufacturing a component
US5878496A (en) * 1996-04-09 1999-03-09 Purdue Research Foundation Method of manufacturing a component
US6217222B1 (en) 1998-11-18 2001-04-17 Skf Usa Inc. Notching construction and method
EP1131565A4 (en) * 1998-11-18 2003-02-26 Skf Usa Inc NOTCH PROCESS AND CONSTRUCTION
US20060138259A1 (en) * 2003-02-04 2006-06-29 Horst Wisniewski Method and device for cracking disk-like or plate-like production parts
US7536895B2 (en) * 2003-07-30 2009-05-26 Rolls-Royce Plc Deformed forging
US20060107718A1 (en) * 2003-07-30 2006-05-25 James Malcolm R Deformed forging
US20050189721A1 (en) * 2004-01-31 2005-09-01 Ab Skf Seal arrangement
US20070116393A1 (en) * 2005-11-22 2007-05-24 Shinji Oishi Needle roller bearing, crank shaft supporting structure, and split method of outer ring of needle roller bearing
EP1887264A1 (de) * 2006-08-07 2008-02-13 Schunk Kohlenstofftechnik GmbH Verfahren zum Herstellen eines tribologischen Bauteils
US20110064350A1 (en) * 2008-05-19 2011-03-17 Kazuyoshi Yamakawa Split outer ring, split rolling bearing using the same ring and construction and method of mounting the same rolling bearing
US8894292B2 (en) * 2008-05-19 2014-11-25 Jtekt Corporation Split outer ring, split rolling bearing using the same ring and construction and method of mounting the same rolling bearing
WO2010027684A1 (en) * 2008-09-04 2010-03-11 The Timken Company Method of manufacturing a split bearing ring
CN102149932A (zh) * 2008-09-04 2011-08-10 美国光洋轴承有限责任公司 制造对开轴承环的方法
US8819939B2 (en) * 2008-09-04 2014-09-02 Koyo Bearings Usa Llc Method of manufacturing a split bearing ring
US20110035943A1 (en) * 2008-09-04 2011-02-17 Koyo Bearings Usa Llc Method of manufacturing a split bearing ring
CN102149932B (zh) * 2008-09-04 2016-11-16 光洋轴承北美有限责任公司 制造对开轴承环的方法
WO2012072408A1 (de) * 2010-12-02 2012-06-07 Schaeffler Technologies AG & Co. KG Bruchtrennverfahren
USD869259S1 (en) 2017-08-28 2019-12-10 Qa1 Precision Products, Inc. Valve component
USD866408S1 (en) 2017-08-28 2019-11-12 Qa1 Precision Products, Inc. Shock absorber
USD872837S1 (en) 2017-08-28 2020-01-14 Qa1 Precision Products, Inc. Bleed needle
US11085502B2 (en) 2017-08-28 2021-08-10 Qa1 Precision Products, Inc. Bleed needle for a hydraulic system
US11105390B2 (en) 2017-08-28 2021-08-31 Qa1 Precision Products, Inc. Shock absorber with dry valving
US11286986B2 (en) 2019-11-08 2022-03-29 Saint-Gobain Performance Plastics Corporation Split bearing, assembly, and method of making and using the same
EP4055291A4 (en) * 2019-11-08 2023-11-22 Saint-Gobain Performance Plastics Corporation GAP BEARING, ARRANGEMENT AND METHOD FOR THE PRODUCTION AND USE THEREOF
CN115927807A (zh) * 2022-12-28 2023-04-07 重庆长江轴承股份有限公司 一种轴承热处理裂纹敏感性、淬硬性测试用试样及测试方法
CN115927807B (zh) * 2022-12-28 2023-08-15 重庆长江轴承股份有限公司 一种轴承热处理裂纹敏感性、淬硬性测试用试样及测试方法

Also Published As

Publication number Publication date
JPS5337262A (en) 1978-04-06
FR2365056A1 (fr) 1978-04-14
JPS612811B2 (enrdf_load_stackoverflow) 1986-01-28
FR2365056B1 (enrdf_load_stackoverflow) 1984-07-13
CA1073645A (en) 1980-03-18
GB1564642A (en) 1980-04-10
DE2723928A1 (de) 1978-03-23
DE2723928C2 (de) 1982-08-26

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